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Preparation method for timber with surface wettability switch responding to environment

A wood surface and environmental response technology, applied in the direction of humidity control wood, impregnated wood, wood impregnation, etc., can solve the problems of inability to achieve reversible conversion of hydrophilicity and hydrophobicity, and inability to respond to changes in external environmental conditions

Inactive Publication Date: 2014-06-04
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that existing wood surface wettability cannot realize reversible conversion between hydrophilic and hydrophobic, and cannot respond to changes in external environmental conditions, and provides a preparation method for wood surface wettability conversion that responds to the environment

Method used

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  • Preparation method for timber with surface wettability switch responding to environment
  • Preparation method for timber with surface wettability switch responding to environment
  • Preparation method for timber with surface wettability switch responding to environment

Examples

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specific Embodiment approach 1

[0017] Embodiment 1: The method for preparing the wood surface wettability conversion in response to the environment described in this embodiment is specifically carried out in accordance with the following steps:

[0018] 1. Mix boric acid, ammonium fluorotitanate and distilled water at room temperature and power of 5W to 100W, and magnetically stir for 25min to 35min to obtain a mixed solution, and then add dropwise 1% to 20% of the mass percentage of the mixed solution hydrochloric acid solution to adjust the pH to 1-7 or dropwise adding an aqueous sodium hydroxide solution with a mass percentage of 1% to 20% to adjust the pH to 7-14 to obtain a pH-adjusted mixed solution;

[0019] The concentration of boric acid in the mixed solution is 1mol / L-10mol / L; the concentration of ammonium fluotitanate in the mixed solution is 1mol / L-10mol / L;

[0020] 2. Wash and dry the wood to obtain the cleaned and dried wood, then place the cleaned and dried wood in the pH-adjusted mixed solut...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: the concentration of boric acid in the mixed solution described in Step 1 is 1 mol / L˜9 mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the concentration of ammonium fluorotitanate in the mixed solution described in step 1 is 1 mol / L-9 mol / L. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a preparation method for a timber with surface wettability switch responding to an environment, relating to a preparation method for a material with surface wettability switch and solving the problems that hydrophilic-lyophobic reversible switch of the timber surface wettability can not be realized and the timber can not respond to the change of an outer environment condition. The method comprises the following steps: preparing a mixed solution and adjusting the pH (Potential of Hydrogen); placing a timber in the mixed solution to react; and washing and drying to obtain the timber with different wettability properties on the surface. The surface wettability of the prepared timber has response to the pH value of the solution and can effectively realize the hydrophilic-lyophobic reversible switch to form an intelligent switch, so that the timber can respond to the change of the outer environment condition and has the self-cleaning function.

Description

technical field [0001] The invention relates to a preparation method for material surface wettability conversion. Background technique [0002] Wood is a natural renewable energy source, with its excellent properties such as easy processing, high strength-to-weight ratio, thermal insulation, and renewable properties, it is widely used in various fields of people's lives. However, wood has its inherent defects at the same time, such as easy to absorb moisture and deform, easy to mold, easy to be corroded and insect-eaten, and easy to change color due to light, which limits its application range. In order to prolong its service life and expand its application range, the bionic functional improvement of wood is carried out. Nano science and technology is a new field of scientific and technological development. Nanomaterials have quantum effects, small size effects, surface effects, and fractal aggregation characteristics, etc., showing many unique properties, and can be used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K1/00B27K3/32
Inventor 李坚高丽坤卢芸孙庆丰甘文涛万才超
Owner NORTHEAST FORESTRY UNIVERSITY
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